Ashop has a sale that offers 20% off all prices on the final day they reduce all the sale prices by 25% linz buys a radio on the final day. work out the overall percentage reduction on the price of the radio.

The correct answer is 40% of overall price reduction.

Step-by-step explanation:

First step, we get the "sale price" that is 20% off.  If the original price is "x",  and the sale price is "y"

y= x- 0,20x

y=0,80x

Then we have another discount, 25% of the sale price,  we will call this new price "z"

So,  z=y-0,25y

z= 0,75y

Replacing

z=0,75*(0,80x)

z=0,60x  

Overall reduction (OR) is the original price(x) minus the final price (z)

OR= x - z = 1- 0,60x = 0,40x

Linz will pay 60% of the original price ,  so the overall discount is 40%

answer: the value should be used for i in the formula of calculation the monthly payment , the interest rate per period is 0.85.

step-by-step explanation:

the given rate of interest i= 85%

in calculating the monthly payment for a loan with an interest rate compounded monthly, the value of the interest rate per period we use in the formula must be in decimal form.

to convert it in decimal, we divide it by 100, we get

hence, the value should be used for i in the formula of calculation the monthly payment , the interest rate per period is 0.85.

throw the computer

step-by-step explanation: